:root{color-scheme:light;--paper:#fcf7e8;--ink:#152347;--blue:#234ddd;--orange:#f45a29;--line:#15234724;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:var(--paper)}
*{box-sizing:border-box}
body{margin:0;padding:24px;min-height:100svh}
button{font:inherit}
.postcard{max-width:1440px;min-height:calc(100svh - 48px);margin:auto;border:1px solid var(--ink);border-radius:4px;display:flex;flex-direction:column;overflow:hidden;background:var(--paper)}
.masthead{padding:25px 40px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line)}
.edition{font-size:.8125rem;font-weight:700;letter-spacing:.12em;line-height:1.5}
.recipient{font-size:.875rem;font-weight:700;background:#f6cf43;color:var(--ink);padding:9px 19px;border-radius:40px;transform:rotate(4deg);white-space:nowrap}
.greeting{flex:1;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:20px;padding:52px 40px 28px 6.5%}
.words{position:relative;z-index:1}
h1{font-family:Arial,Helvetica,sans-serif;margin:0 0 28px;font-size:clamp(5rem,9.7vw,9.4rem);line-height:.88;letter-spacing:-.065em;font-weight:900}
h1 span{color:var(--blue)}
.message{font-size:clamp(1.3rem,2.2vw,1.875rem);line-height:1.25;letter-spacing:-.035em;margin:0 0 14px;max-width:24rem}
.wish{font-size:1rem;line-height:1.5;margin:0 0 27px;color:#45506a}
button{display:inline-flex;gap:12px;align-items:center;justify-content:center;border:1px solid var(--ink);border-radius:99px;min-height:52px;padding:12px 23px;font-size:1rem;font-weight:700;cursor:pointer;background:var(--ink);color:var(--paper);box-shadow:4px 4px 0 #f6cf43;transition:transform .16s,box-shadow .16s}
button span{color:#f6cf43;font-size:1.4rem}
button:hover{transform:translate(-1px,-2px);box-shadow:6px 6px 0 #f6cf43}
button:active{transform:translate(2px,2px);box-shadow:2px 2px 0 #f6cf43}
button:focus-visible{outline:3px solid var(--blue);outline-offset:6px}
.response{min-height:1.5em;font-size:.875rem;line-height:1.5;margin:15px 0 0;color:var(--blue)}
.artwork{margin:0;align-self:center;position:relative;width:100%;max-width:650px}
.artwork img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:contain;mix-blend-mode:multiply}
figcaption{font-size:.9375rem;line-height:1.45;letter-spacing:-.015em;margin:20px 16px 0;text-align:center;transform:rotate(-4deg)}
footer{margin:0 40px;padding:23px 0 24px;border-top:1px solid var(--line);display:flex;gap:20px;align-items:center;justify-content:space-between;font-size:.8125rem;line-height:1.5;color:#45506a}
.signature{font-size:1.2rem;font-weight:700;color:var(--ink);letter-spacing:-.035em;display:flex;align-items:center;gap:12px}
.signature span{font-size:1.8rem;color:var(--orange);line-height:1}
.confetti{pointer-events:none;position:fixed;inset:0;overflow:hidden;z-index:3}
.particle{position:absolute;left:50%;top:50%;width:11px;height:16px;background:var(--color);opacity:0;animation:burst 1.8s cubic-bezier(.18,.68,.35,1) forwards;animation-delay:var(--delay);border-radius:2px}
@keyframes burst{0%{opacity:0;transform:translate(-50%,-50%) rotate(0deg)}10%{opacity:1}75%{opacity:1}100%{opacity:0;transform:translate(var(--x),var(--y)) rotate(var(--rotation))}}
@media(min-width:1450px){.greeting{padding-top:64px;padding-bottom:48px}}
@media(max-width:760px){body{padding:12px}.postcard{min-height:calc(100svh - 24px)}.masthead{padding:19px 22px}.edition{font-size:.75rem;letter-spacing:.08em}.recipient{padding:7px 13px;font-size:.8125rem}.greeting{grid-template-columns:1fr;padding:38px 26px 25px;gap:8px}h1{font-size:clamp(5.4rem,18vw,7.9rem);margin-bottom:22px}.message{font-size:1.5rem}.wish{margin-bottom:21px}.desktop-break{display:none}.artwork{width:100%;max-width:390px;margin:0 auto}.artwork img{aspect-ratio:4/3}.response{margin-bottom:0}figcaption{margin-top:0;font-size:.875rem}footer{margin:0 22px;padding:20px 0;align-items:flex-end;gap:24px}footer>span:first-child{max-width:160px;font-size:.75rem}.signature{font-size:1.1rem;white-space:nowrap}}
@media(max-width:360px){.masthead{padding:16px}.edition{max-width:145px}.greeting{padding:32px 20px 25px}h1{font-size:5rem}button{padding:12px 17px;font-size:.9375rem}footer{margin:0 16px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.recipient,figcaption{transform:none}.confetti{display:none}}